package org.cypress.rtpack.common.config;

import org.apache.http.client.HttpClient;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.config.Registry;
import org.apache.http.config.RegistryBuilder;
import org.apache.http.conn.socket.ConnectionSocketFactory;
import org.apache.http.conn.socket.PlainConnectionSocketFactory;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.client.ClientHttpRequestFactory;
import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;
import org.springframework.web.client.RestTemplate;

/**
 * 构建RestTemplate
 */
@Configuration
public class RestTemplateConfig {

	@Bean
	public RestTemplate restTemplate() {
		return new RestTemplate(httpRequestFactory());
	}

	private ClientHttpRequestFactory httpRequestFactory() {
		return new HttpComponentsClientHttpRequestFactory(httpClient());
	}

    private HttpClient httpClient() {
		Registry<ConnectionSocketFactory> registry = RegistryBuilder.<ConnectionSocketFactory> create()
				.register("http", PlainConnectionSocketFactory.getSocketFactory())
				.register("https", SSLConnectionSocketFactory.getSocketFactory()).build();
		PoolingHttpClientConnectionManager connectionManager = new PoolingHttpClientConnectionManager(registry);
		// 设置整个连接池最大连接数
		connectionManager.setMaxTotal(100);
		// 路由是对maxTotal的细分
		connectionManager.setDefaultMaxPerRoute(100);
		RequestConfig requestConfig = RequestConfig.custom()
				// 服务器返回数据(response)的时间，超过该时间抛出read timeout
				.setSocketTimeout(60000)
				// 连接上服务器(握手成功)的时间，超出该时间抛出connect timeout
				.setConnectTimeout(5000)
				// 从连接池中获取连接的超时时间，超过该时间未拿到可用连接，
				// 会抛出org.apache.http.conn.ConnectionPoolTimeoutException:
				// Timeout waiting for connection from pool
				.setConnectionRequestTimeout(1000).build();
		return HttpClientBuilder.create().setDefaultRequestConfig(requestConfig).setConnectionManager(connectionManager)
				.build();
	}
}
